What are your responsibilities as an etl tester?
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you have created a lookup transformation for a certain condition which if true returns multiple rows. when you go to the target and see only one row has come and not all. why is it so and how it can be corrected.
What is tracing level?
what are Lookup caches options? Including persistent caches.
Is hadoop a etl tool?
How can you use an Oracle sequences in Informatica ? You have an Informatica sequence generator transformation also. which one is better to use?
what is the difference between cubes and package in cognos
What are the three tiers in etl?
what is the difference between OLTP database and data warehousing database?
Mention few test cases and explain them?
Identifying the bottlenecks in various components of Informatica and resolving them.
how do u decide whether u need to do aggregations at database level or at Informatica level?
what are variable ports and list two situations when they can be used?